VOL. XCIV, NO. 247
FIND MY MOAT EDITOR PICKS
Editor order · Top 12 free tools
Best Free Insider Trading Trackers
Our editor-ranked free insider trading trackers. Global vote totals are shown separately.
This curated list highlights free insider trading trackers and free-access filing tools. Compare Form 4 screens, insider buying and selling alerts, ownership context, exports, and APIs before upgrading for deeper history or automation.
Editor-ranked · Free tiers only · Global votes shown
Top 10 Tools
- 1Top pick
OpenInsider is a free SEC Form 4 screener for insider buying, selling, cluster buys, and transaction reports. It is useful for quick table-based research, but there is no formal support SLA, mobile app, or documented public API.
Best forInsider and institutional trackingStock screeningMarket monitoringStock researchWatch-outsU.S. SEC scopeNo official paid support surface - 2
Insider Screener standardizes director and insider transactions across several markets, with screens, saved stocks, exports, alerts, and a separate REST API. It is an insider-signal layer for research, not a complete thesis, broker, portfolio ledger, or unrestricted bulk feed.
Best forInsider and institutional trackingStock screeningPortfolio alertsMarket monitoringFinancial data APIWatch-outsPaid tiers gate serious workflowInsider trades need context - 3
SecForm4.com tracks Forms 3, 4, and 5, 13D/G, and 13F filings from EDGAR. Use it to find insider and ownership activity, then check the filing, issuer, and current position yourself. It is not a broker, global insider database, portfolio tracker, or buy/sell signal.
Best forInsider and institutional trackingInvestor holdings researchMarket monitoringStock researchWatch-outsInsider signals need contextNo verified public pricing page - 4
CEO Watcher organizes US insider transactions by historical forward returns, win rates, trade patterns, and filing context. A free weekly newsletter covers selected trades; paid access adds search, feeds, Discord, alerts, and a daily pre-market email.
Best forInsider and institutional trackingAlertsInvestment newsStock researchMarket monitoringWatch-outsInsider signals are not standalone thesesUS Form 4 focus - 5
Insider Monitor is a free U.S. reference site for Forms 3, 4, and 5, insider buys and sells, cluster buys, and top-buying lists. It is a quick prompt for checking recent activity and then opening the SEC filing. Reporting lags the trade, and the site does not advertise alerts, exports, or an API.
Best forInsider and institutional trackingMarket monitoringStock researchInvestment newsWatch-outsNo alerts or API advertisedTrades can be two business days old - 6
InsideArbitrage combines special-situation research with screens, calendars, newsletters and tracking tools. Its main subjects are merger arbitrage, insider trades, spinoffs, buybacks, CVRs, tender offers and activist campaigns.
Best forStock researchMarket monitoringInsider and institutional trackingInvestment newsPortfolio watchlistsWatch-outsPaid-only serious workflowEvent-driven scope - 7
Fintel brings short interest, off-exchange volume, institutional ownership, insider trades, ETF exposure, options sentiment, filings, screens, alerts, APIs, and AI research into ticker pages. It is useful for studying positioning and crowding before deeper fundamental work. Premium data, exports, options flow, AI, and portfolio tools depend on the plan, and the signals are inputs rather than recommendations.
Best forInsider and institutional trackingOptions dataStock screeningQuant ratingsAI research workspaceWatch-outsMany core workflows are paidBroker linking is U.S.-only - 8
Tracefour provides free insider-trade heatmaps, filing email alerts, and a read-only API covering U.S. filings, selected European director dealings, and U.S. Congress disclosures.
Best forInsider and institutional trackingStock screeningMarket monitoringStock researchWatch-outsAPI request limitsAttribution and European source terms - 9
SEC EDGAR is the free public source for company, fund, insider, ownership, prospectus, and XBRL filings submitted to the SEC. It has full-text search, latest filings, RSS, CIK lookup, public JSON APIs, archives, and bulk files. Most filings still need parsing before comparison or analysis.
Best forStock researchFundamental researchFundamentals dataResearch reportsInsider and institutional trackingWatch-outsFair-access limits applyRaw filings require parsing - 10
Quiver Quantitative provides dashboards, screens, alerts, backtests, and APIs for political trades, insiders, institutions, lobbying, government contracts, patents, apps, ETFs, dark pools, and other alternative data. Web Premium and Quiver API are separate products, and the signals can be noisy or delayed.
Best forInsider and institutional trackingInvestor holdings researchMarket data APIStrategy backtestingStock screeningWatch-outsPersonal plans restrict reuseU.S.-centric alternative data
- 11
BamSEC speeds up SEC filing and transcript research in a web workspace. Its useful pieces are document search, filing redlines, table extraction, ownership data, watchlists, alerts, highlights, and shareable source links. Most professional features sit behind Pro or Enterprise.
Best forFundamental researchEarnings transcript researchStock researchInsider and institutional trackingPortfolio alertsWatch-outsPremium workflows are paidU.S. filing-centric coverage - 12
SEC API is a commercial EDGAR service with filing search, real-time feeds, XBRL-to-JSON conversion, section extraction, insider filings, 13F data, and other regulatory datasets. It is for production ingestion rather than building your own parser. The free tier is small and redistribution needs enterprise terms.
Best forFinancial data APIFundamentals dataInsider and institutional trackingMarket monitoringAI agent data accessWatch-outsFree tier is only a starterSEC-only scope
Need deeper insider monitoring?
Explore the full list of 14 insider trading trackers, including premium tools for alerts, exports, APIs, ownership changes, and historical screens.
See all insider trading trackersBest Free Insider Trading Trackers FAQ
What belongs on this insider trading tracker page?
This page is for tools that track insider buying and selling, Forms 3, 4, and 5, Form 4 alerts, 13D/G ownership changes, insider screens, exports, or APIs.
How is this different from SEC filing search tools?
SEC filing search tools focus on general EDGAR search, filing text, exhibits, redlines, and tables. Insider trackers focus on finished insider and ownership monitoring workflows.
Are 13F trackers included?
Only when they support insider or ownership monitoring context. Generic institutional ownership tracking belongs closer to institutional ownership category pages.
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Feedback
Spot something off, stale, or missing? Tell us how this free list, vote tallies, or a tool listing could be better.
Curation & Accuracy
This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).
Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.